CN117888790A - Lower hinge assembly and embedded refrigerator - Google Patents

Abstract

The invention provides a lower hinge assembly and an embedded refrigerator, wherein the lower hinge assembly comprises a fixed hinge part and a movable hinge part movably connected with the fixed hinge part, a first base surface and a second base surface which are mutually matched are arranged between the fixed hinge part and the movable hinge part, a first shaft body, a first groove body matched with the first shaft body, a second shaft body and a second groove body matched with the second shaft body are arranged between the first base surface and the second base surface, and in the process that the movable hinge part rotates and is opened in a direction far away from the fixed hinge part, the first shaft body is matched with the first groove body, and the second shaft body and the second groove body drive the movable hinge part to translate according to a preset track; one of the first base surface and the second base surface is provided with a stop lug protruding towards the other base surface, and the other base surface is provided with a limit guide part positioned on the moving path of the stop lug so as to be matched with the stop lug; the door body is limited at a preset opening angle or in a closed state.

Description

Lower hinge assembly and embedded refrigerator

Technical Field

The invention relates to the field of refrigeration equipment, in particular to a lower hinge assembly for an embedded refrigerator and the embedded refrigerator with the lower hinge assembly.

Background

In general, the refrigerator and the door body are relatively moved by a fixed hinge, and the door body rotates around a fixed axis, so that the opening and closing degrees of freedom of the door body are greatly limited, namely, the movement track of the door body cannot be freely controlled to adapt to different application scenes.

With the improvement of society, the living standard of people is improved, the placing position and the placing mode of the refrigerator in the family are more and more watched by the common user, and aiming at the current family decoration style, part of families pursue style integration, the refrigerator needs to be placed in a cabinet to form a so-called embedded refrigerator, and the refrigerator with a door body rotating around a fixed axis is difficult to adapt to the embedded application scene, namely, interference can be generated between the door body and the cabinet when the door is opened.

The existing part embedded refrigerator is connected between the refrigerator body and the door body by adopting a double-shaft double-groove structure, so that the door body is driven to translate according to a preset track when the door body is rotated and opened, and interference between the door body and a cabinet is avoided. However, the door body cannot realize a hovering function in the opening process; meanwhile, the door body is easy to rebound when the door is closed, the problem that the door is closed at a small angle is solved, and the use experience of a user is affected.

Disclosure of Invention

The invention aims to provide a lower hinge assembly and an embedded refrigerator with the same.

In order to achieve the aim of the invention, the invention adopts the following technical scheme: the lower hinge assembly comprises a fixed hinge piece fixed on a box body and a movable hinge piece fixed on a door body and movably connected with the fixed hinge piece, wherein a first base surface and a second base surface which are matched with each other are arranged between the fixed hinge piece and the movable hinge piece, a first shaft body, a first groove body matched with the first shaft body, a second shaft body and a second groove body matched with the second shaft body are arranged between the first base surface and the second base surface, and in the process that the movable hinge piece rotates and is opened in a direction away from the fixed hinge piece, the first shaft body is matched with the first groove body, and the second shaft body and the second groove body are matched with each other to drive the movable hinge piece to translate according to a preset track; one of the first base surface and the second base surface is provided with a stop lug protruding towards the other base surface, and the other base surface is provided with a limit guide part which is positioned on the moving path of the stop lug and matched with the stop lug.

As a further improved technical scheme of the invention, the limit guide part comprises a limit groove matched with the limit projection, and the movable hinge part is limited at a preset opening angle after the movable hinge part rotates to be opened in a direction away from the fixed hinge part until the limit projection is meshed with the limit groove.

As a further improved technical scheme of the invention, the preset opening angle is not smaller than 90 degrees.

As a further improved technical solution of the present invention, the limit guiding portion includes a guiding inclined plane, and the stop protrusion cooperates with the guiding inclined plane when the movable hinge member rotates from a preset closing angle toward the fixed hinge member to be closed to a closed state.

As a further development of the invention, the stop cam has a mating bevel, which mates with the guide bevel when the movable hinge element is pivoted from a predetermined closing angle toward the fixed hinge element to a closed state.

As a further improved technical solution of the present invention, the preset closing angle is 15 °.

As a further improved technical scheme of the invention, the limit guide part is arranged on the first base surface and is positioned at a position corresponding to the edge of the fixed hinge piece; or the limit guide part is arranged on the second basal plane, and the limit guide part is positioned at the position of the second basal plane corresponding to the edge of the movable hinge piece.

As a further improved technical scheme of the invention, a wavy structure is arranged on the first base surface or the second base surface of the limit guide part in a protruding mode at a position corresponding to the moving path of the stop lug, and the wavy structure forms the limit guide part.

As a further improved technical scheme of the invention, the limit guide part is arranged at the notch of the first groove body or the second groove body.

As a further improved technical scheme of the invention, the notch of the first groove body and the notch of the second groove body are provided with flanges, and the limit guide part is arranged on the flanges.

As a further improved technical scheme of the invention, the first shaft body and the second shaft body are convexly arranged on the fixed hinge piece, and the first groove body and the second groove body are arranged on the movable hinge piece.

In order to achieve the above object, the present invention further provides an embedded refrigerator, including a refrigerator body, a door body for opening or closing the refrigerator body; the embedded refrigerator further comprises the lower hinge assembly which is movably connected to the door body on the refrigerator body.

The beneficial effects of the invention are as follows: the lower hinge component is characterized in that a stop lug matched with the movable hinge component and a limit guide part positioned on the moving path of the stop lug are arranged between the fixed hinge component and the movable hinge component. After the stop lug is matched with the limit guide part, the limit guide part limits the stop lug, so that the door body can be positioned, and the door body is limited at a preset opening angle or in a closed state.

Drawings

Fig. 1 is a schematic structural view of a refrigerator in a first embodiment of the present invention (including a lower hinge assembly in the first embodiment);

FIG. 2 is a schematic view of the lower hinge assembly of FIG. 1 (door in a closed position);

FIG. 3 is an exploded view of the lower hinge assembly shown in FIG. 2;

fig. 4 is a schematic view of a structure in which a door body is in a hovering state in the refrigerator of fig. 1;

fig. 5 is a schematic view showing a structure in which a door body is opened to a maximum opening angle in the refrigerator of fig. 1;

fig. 6 is a schematic view illustrating a structure in which a door body is closed to a predetermined closing angle in the refrigerator of fig. 1;

FIG. 7 is a schematic view of the lower hinge assembly of FIG. 6;

FIG. 8 is a bottom view of the mating first shaft, first slot, second shaft, second slot of the lower hinge assembly of the refrigerator of FIG. 1 (door in closed position);

FIG. 9 is a bottom view of the mating first shaft, first slot, second shaft, second slot of the lower hinge assembly of the refrigerator of FIG. 1 (door at a first opening angle);

FIG. 10 is a bottom view of the mating first shaft, first slot, second shaft, second slot of the lower hinge assembly of the refrigerator of FIG. 1 (door at a second opening angle);

FIG. 11 is a bottom view of the mating first shaft, first slot, second shaft, second slot of the lower hinge assembly of the refrigerator of FIG. 1 (door rotated open from second open angle to third open angle);

FIG. 12 is a bottom view of the mating first shaft, first slot, second shaft, second slot of the lower hinge assembly of the refrigerator of FIG. 1 (door at maximum opening angle);

fig. 13 is a schematic structural view of a refrigerator in a second embodiment of the present invention (including a lower hinge assembly in the second embodiment);

FIG. 14 is a schematic structural view of a hinge assembly in a hovering state of a door of the refrigerator of FIG. 13;

FIG. 15 is an exploded view of the lower hinge assembly of FIG. 14;

fig. 16 is a schematic view illustrating a structure of a hinge assembly when a door body is closed to a predetermined closing angle in the refrigerator of fig. 13.

Detailed Description

The present invention will be described in detail below with reference to the embodiments shown in the drawings, and in detail, reference is made to fig. 1-16, which illustrate preferred embodiments of the present invention, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. It should be understood that these embodiments are not intended to limit the present invention, and that functional, method, or structural equivalents and alternatives falling within the scope of the present invention may be modified by any person skilled in the art to include such embodiments.

In the drawings of the present invention, certain dimensions of structures or portions may be exaggerated relative to other structures or portions for convenience of illustration, and thus serve only to illustrate basic structures of the subject matter of the present invention.

Terms such as "left," "right," "front," "rear," and the like, as used herein, refer to a spatial relative position, and are used for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The term spatially relative position may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be otherwise oriented (rotated 90 degrees or other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terms first, second, etc. in the present invention are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated; furthermore, unless explicitly stated and limited otherwise, the term "coupled" should be interpreted broadly, as for example, the coupling may be direct or indirect via intermediaries, and may be fixed or movable or removable or an integral connection. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1 to 12, a lower hinge assembly 3 and an embedded refrigerator 100 having the lower hinge assembly 3 according to a first embodiment of the present invention are shown. The embedded refrigerator 100 is used for being embedded in the cabinet 200, but not limited to this, and the embedded refrigerator 100 may be embedded in a wall.

The embedded refrigerator 100 comprises a refrigerator body 1, a door body 2 for opening or closing the refrigerator body 1, and a hinge assembly for movably connecting the door body 2 to the refrigerator body 1. In the process that the door body 2 rotates to be opened in a direction away from the case body 1, the hinge assembly drives the door body 2 to translate along a preset track, so as to avoid interference between the door body 2 and the cabinet 200.

Specifically, the hinge assembly includes an upper hinge assembly disposed above the door body 2 and a lower hinge assembly 3 disposed below the door body 2. The invention is not limited to the specific structure of the upper hinge assembly, as long as the upper hinge assembly and the lower hinge assembly 3 cooperate to drive the door body 2 to translate along a preset track in the process of rotating the door body 2.

As shown in fig. 2-3, the lower hinge assembly 3 includes a fixed hinge member 31 fixed to the case 1, and a movable hinge member 32 fixed to the door 2 and movably connected to the fixed hinge member 31. During the rotation of the door body 2, the movable hinge member 32 moves synchronously with the door body 2, and the translation of the door body 2 along the preset track means that the movable hinge member 32 translates along the preset track.

Further, the fixed hinge member 31 and the movable hinge member 32 have a first base 311 and a second base 321 which are matched with each other. A first shaft body 312, a first groove body 322 matched with the first shaft body 312, a second shaft body 313 and a second groove body 323 matched with the second shaft body 313 are arranged between the first base surface 311 and the second base surface 321. In the process that the movable hinge member 32 rotates and opens in a direction away from the fixed hinge member 31, the first shaft body 312 is matched with the first groove body 322, and the second shaft body 313 is matched with the second groove body 323 to drive the movable hinge member 32 to translate according to a preset track, so as to drive the door body 2 to translate according to the preset track. In the present invention, the door body 2 is driven to move along a preset track in the rotation process by the cooperation of the double shafts (the first shaft body 312 and the second shaft body 313) and the double grooves (the first groove body 322 and the second groove body 323), compared with the single-shaft hinge, the present invention does not need high installation precision, and can greatly reduce the design cost and the installation difficulty.

In this embodiment, the first shaft body 312 and the second shaft body 313 are both disposed on the fixed hinge member 31, and the first groove body 322 and the second groove body 323 are both disposed on the movable hinge member 32. Of course, the present invention is not limited to this, and in other embodiments, the first shaft body 312 and the second shaft body 313 may be both disposed on the movable hinge member 32, and the first groove body 322 and the second groove body 323 may be both disposed on the fixed hinge member 31.

Specifically, the fixed hinge member 31 includes a hinge plate 314 fixed to the case 1, and the first shaft 312 and the second shaft 313 are both protruded on an upper surface of the hinge plate 314. The fixed hinge member 31 further includes a shaft housing 315 fixed to an upper surface of the hinge plate 314, and the shaft housing 315 has a shaft hole 3151 through which the first shaft body 312 and the second shaft body 313 pass. After the shaft sleeve 315 is mounted on the hinge plate 314, the first shaft body 312 and the second shaft body 313 are exposed outwards from the shaft hole 3151, so that the first shaft body 312 and the second shaft body 313 can respectively cooperate with the first groove body 322 and the second groove body 323 on the movable hinge member 32, so that the movable hinge member 32 is movably connected to the fixed hinge member 31, and the movable hinge member 32 can translate along a preset track.

The first base surface 311 refers to the side of the sleeve 315 facing the movable hinge member 32, i.e., the upper surface of the sleeve 315. Correspondingly, the second base 321 refers to a side of the movable hinge member 32 facing the shaft sleeve 315, that is, a lower surface of the movable hinge member 32.

Further, one of the first base surface 311 and the second base surface 321 is provided with a stop projection 33 projecting toward the other, and the other is provided with a limit guide 34 located on the moving path of the stop projection 33 to be engaged with the stop projection 33. After the stop protruding block 33 is matched with the limit guiding portion 34, the limit guiding portion 34 limits the stop protruding block 33, so that the door body 2 can be positioned, and the door body 2 can be positioned at a preset position, for example, the door body 2 is limited at a preset opening angle or in a closed state.

The spacing guide portion 34 is spacing the backstop lug 33, can make the door body 2 is spacing when predetermining the angle of opening, and the convenience of customers gets and puts article, to violently open the door phenomenon, even the dynamics of opening the door has overcome the dynamics of hovering between backstop lug 33 and the spacing guide portion 34, the existence of spacing guide portion 34 also can slow down the door body 2 and open speed, plays the cushioning effect to violently open the door.

The stop projection 33 is limited by the limit guide portion 34, so that when the door body 2 is limited in a closed state, rebound of the door body 2 after closing the door can be avoided, and the problem of loose closing of the door can be avoided.

In one embodiment, the stop protrusion 33 is protruding on the second base surface 321, and the limit guide portion 34 is disposed on the first base surface 311. Of course, not limited to this, in other embodiments, the stop protrusion 33 is protruded on the first base surface 311, and the limit guide portion 34 is disposed on the second base surface 321.

Referring to fig. 2-7, the limit guide portion 34 includes a limit groove 341 matched with the stop protrusion 33, and after the movable hinge member 32 rotates and opens in a direction away from the fixed hinge member 31 until the stop protrusion 33 engages in the limit groove 341, the movable hinge member 32 is limited at a preset opening angle. The door body 2 is in a hovering state, namely, the door body 2 is limited at the preset opening angle, so that a user can conveniently take and put articles.

In one embodiment, the predetermined opening angle is 90 °. Of course, the opening angle may be larger than 90 ° in other embodiments, so that the user may take and put the article conveniently.

Specifically, the stop protrusion 33 and the limit groove 341 are both arc-shaped. The stop projection 33 can be smoothly inserted into or separated from the limit groove 341, so as to enhance the stability of the rotation of the door body 2.

Further, the limit guide 34 includes a guiding inclined plane 342, and the stop protrusion 33 cooperates with the guiding inclined plane 342 when the movable hinge member 32 rotates from a predetermined closing angle toward the fixed hinge member 31 to a closed state. Under the dead weight of the door body 2, the stop lug 33 moves along the guide inclined plane 342, so that the door body 2 rotates to be closed, and the door can be assisted to be closed, and meanwhile, after the door body 2 is in a closed state, the stop lug 33 abuts against the end part of the guide inclined plane 342, so that the door body 2 can be prevented from rebounding after the door body 2 is closed when the door body is limited in the closed state, and the problem of untight door closing is avoided.

Further, the stop protrusion 33 has a mating inclined plane 331, and when the movable hinge member 32 rotates from a preset closing angle toward the fixed hinge member 31 to a closed state, the mating inclined plane 331 cooperates with the guiding inclined plane 342, so that the door body 2 can be closed slowly by self-service, and the stability of the movement of the door body 2 is enhanced.

In one embodiment, the preset closing angle is 15 °. That is, when the door 2 is closed to 15 °, the stop protrusion 33 is located on the guide slope 342, and when the user releases his or her hand, the stop protrusion 33 moves along the guide slope 342 under the weight of the door 2, so that the door 2 is rotated to be closed, and the door closing assistance function is achieved. Of course, this is not a limitation.

It is known that during the rotation of the door body 2, the door body 2 translates synchronously, i.e. the rotation axis of the door body 2 is not fixed, but translates.

The rotation axis of the door 2 is a virtual axis, that is, the rotation axis defined by the first shaft 312 and the second shaft 313.

Further, in the present embodiment, the limit guide 34 is located at a position of the first base surface 311 corresponding to the edge of the fixed hinge member 31, that is, the limit guide 34 is located at the edge of the boss 315. Correspondingly, the stop protruding block 33 is located at the edge of the second base 321, that is, the stop protruding block 33 is further away from the rotation axis of the door body 2, so that the moving path of the stop protruding block 33 is almost located on the same circumference in the rotation process of the door body 2, and therefore, the limit groove 341 and the guide inclined plane 342 are almost located on the same circumference, which can avoid a click point in the movement process of the door body 2, and enhance the smoothness and stability of the movement of the door body 2.

Specifically, a wavy structure 3111 is protruding on the first base surface 311 at a position corresponding to the moving path of the stop protrusion 33, and the wavy structure 3111 forms the limit guide 34. During the rotation of the door body 2, the wavy structure 3111 can guide the stop lug 33 to move onto the guide inclined plane 342 and guide the stop lug 33 to move into the limit groove 341, so as to enhance the smoothness and stability of the movement of the door body 2.

It is known that the wavy structure 3111 is formed on the same circumference, so as to avoid a jamming point in the motion process of the door body 2, and enhance the smoothness and stability of the motion of the door body 2.

Further, the door body 2 has a rotating end 21 and a free end 22 opposite to the rotating end 21, and the rotating end 21 and the free end 22 form a first direction perpendicular to the front-rear direction.

Specifically, when the rotating end 21 is the left end or the right end of the door body 2, the first direction is the left-right direction.

Specifically, the first shaft body 312 and the second shaft body 313 are disposed in sequence along the direction of the rotation end 21 toward the free end 22, that is, the first shaft body 312 is closer to the rotation end 21 than the second shaft body 313.

Further, as shown in connection with fig. 1, 4, the case 1 has a pivoting side 11 at the pivoting end 21 of the door 2. A direction defined from the center of the case 1 away from the pivoting side 11 is a second direction X, and a direction from the center of the case 1 toward the pivoting side 11 is a third direction Y.

Specifically, when the rotating end 21 is the right end of the door body 2, the pivoting side 11 refers to the right side of the box body 1, the second direction X refers to the right-to-left direction, and the third direction Y refers to the left-to-right direction. When the rotating end 21 is the left end of the door 2, the pivoting side 11 is the left side of the case 1, the second direction X is the left-to-right direction, and the third direction Y is the right-to-left direction.

Specifically, as shown in fig. 8-12, the first groove 322 includes an initial position A1 and a first stop position A2, and the second groove 323 includes a first end L1, a second end L2, and a first section L3 and a second section L4 disposed between and connected to the first end L1 and the second end L2. Referring to fig. 8, when the door 2 is in the closed state, the first shaft 312 is at the initial position A1, the second shaft 313 is at the first end L1, and the stop protrusion 33 abuts against the guide slope 342, so as to keep the door 2 in the closed state. The first segment L3 is an arc with the initial position A1 as a center. Referring to fig. 9, when the door 2 is opened from the closed state to the first opening angle, the first shaft 312 is maintained at the initial position A1, the second shaft 313 moves in the first section L3, and at this time, the door 2 rotates in place with the first shaft 312 at the initial position A1 as an axis, that is, the door 2 only rotates without displacement in other directions, which can effectively avoid that the door 2 cannot be opened normally due to displacement in a certain direction of the door 2, such as the door 2 with a turnover beam, and the bump on the turnover beam can be separated from the groove on the box 1, so that the door 2 can be opened smoothly. Referring to fig. 10, when the door 2 continues to be opened from the first opening angle to the second opening angle, the second shaft 313 moves in the second section L4 toward the second end L2 to drive the first shaft 312 to move from the initial position A1 to the first stop position A2, and at this time, the door 2 moves in the second direction X away from the pivoting side 11 during rotation, so as to avoid interference between the door 2 and the peripheral cabinet 200 or wall during opening, and is suitable for accommodating a scene with a smaller space of the embedded refrigerator 100.

Further, as shown in fig. 11, when the door body 2 is continuously opened from the second opening angle to the third opening angle, the movable hinge member 32 cooperates with the fixed hinge member 31 to drive the door body 2 to move toward the pivot side 11 along the third direction Y while the door body 2 rotates. Therefore, the door body 2 is kept away from the box body 1 as far as possible, the opening degree of the box body 1 is ensured, and the problem that drawers, racks and the like in the box body 1 cannot be opened due to interference of the door body 2 is avoided.

Specifically, as shown in fig. 11, the first slot 322 further includes a pivot position A3 located at a side of the initial position A1 away from the first stop position A2, and the second slot 323 further includes a third section L5 located between the second section L4 and the second end L2. When the door 2 is in the process of continuing to open from the second opening angle to the third opening angle, the second shaft 313 moves in the third section L5 to drive the first shaft 312 to move from the first stop position A2 to the pivot position A3. At this time, the door body 2 moves towards the pivoting side 11 along the third direction Y during rotation, so that the door body 2 is kept away from the box body 1 as far as possible, the opening of the box body 1 is ensured, and the problem that drawers, racks and the like in the box body 1 cannot be opened due to interference of the door body 2 is avoided.

Further, when the door body 2 is in the process of continuing to open from the third opening angle to the maximum opening angle, the movable hinge member 32 cooperates with the fixed hinge member 31 to drive the door body 2 to rotate in place relative to the case body 1, so as to further open the door body 2.

Specifically, as shown in fig. 12, the second groove body 323 further includes a fourth segment L6 located between the third segment L5 and the second end L2, where the fourth segment L6 is an arc groove with the pivot position A3 as a center of a circle. Referring to fig. 6, when the door 2 is in the process of continuing to open from the third opening angle to the maximum opening angle, the first shaft 312 is maintained at the pivot position A3, and the second shaft 313 moves in the fourth section L6, so that the door 2 rotates in place around the first shaft 312 at the pivot position A3, so as to further open the door 2.

It will be appreciated that, during the process of opening the door 2 from the closed state to the first opening angle, the pivoting end of the door 2 protrudes slightly from the housing 1 toward the pivoting side 11 in the third direction Y due to the in-situ rotation of the door 2 relative to the housing 1. When the door body 2 is continuously opened to the second opening angle from the first opening angle, the displacement of the door body 2 along the second direction X can offset all parts of the door body 2 protruding out of the box body 1 along the third direction Y in the whole rotation process, and then when the door body 2 is continuously opened to the third opening angle from the second opening angle, the displacement of the door body 2 along the third direction Y can enable the door body 2 not to protrude out of the box body 1 and ensure the opening of the box body 1 as much as possible.

Specifically, the first opening angle is smaller than the second opening angle, the first opening angle is 10 degrees, the second opening angle is not larger than 90 degrees, the third opening angle is 90 degrees, and the maximum opening angle is larger than 90 degrees. That is, in the process of opening the door body 2 from the first opening angle of 10 ° to 90 °, the door body 2 is displaced along the second direction X, so as to avoid interference between the door body 2 and the peripheral cabinet 200 or the wall body during the opening process, and then the door body 2 is displaced along the third direction Y, so as to avoid the door body 2 from obstructing the opening of the drawer, the rack, etc. in the box body 1, and finally, the door body 2 rotates in place relative to the box body 1 to further open the door body 2.

It can be known that, in the embodiment where the preset opening angle is 90 °, after the door body 2 hovers over the preset opening angle, that is, after hovering over the third opening angle, if the opening angle of the door body 2 needs to be continuously increased, the door body 2 may be further opened, so that the stop protrusion 33 is separated from the limit groove 341, and therefore, the opening angle of the door body 2 may be further increased to the maximum opening angle.

Referring to fig. 13 to 16, the lower hinge assembly 3a and the embedded refrigerator 100a having the lower hinge assembly 3a according to the second embodiment of the present invention are shown. The lower hinge assembly 3a in the second embodiment of the present invention is different from the lower hinge assembly 3 in the first embodiment in that: the limit guide portion 34a is disposed at a notch of the first groove 322 or the second groove 323, and the stop protrusion 33 is disposed near the first shaft 312 or the second shaft 313. That is, when the limit guide 34a is disposed at the notch of the first groove 322, the stop protrusion 33 is disposed near the first shaft 312. When the limit guide portion 34a is disposed at the notch of the second groove body 323, the stop protrusion 33 is disposed near the second shaft body 313. The arrangement of the limit guides 34a is simplified, and the structure of the lower hinge assembly 3a is simplified.

Further, the notches of the first groove 322 and the second groove 323 have flanges 3221, and the limit guiding portion 34a is disposed on the flanges 3221. Specifically, when the limit guide portion 34a is disposed at the notch of the first groove body 322, the limit groove 341a and the guide inclined surface 342a are formed on the flange 3221 by recessing. The setting of the limit guides 34a is simplified.

The lower hinge assembly 3a in the second embodiment of the present invention is identical to the lower hinge assembly 3 in the first embodiment of the present invention except for the above differences, and thus, the description thereof will not be repeated.

In summary, in the lower hinge assembly 3 of the present invention, the stop protrusion 33 and the limit guide 34 are disposed between the fixed hinge member 31 and the movable hinge member 32, which are engaged with each other, along the moving path of the stop protrusion 33. After the stop protruding block 33 is matched with the limit guiding portion 34, the limit guiding portion 34 limits the stop protruding block 33, so that the door body 2 can be positioned, and the door body 2 is limited at a preset opening angle or in a closed state.

It should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is for clarity only, and that the skilled artisan should recognize that the embodiments may be combined as appropriate to form other embodiments that will be understood by those skilled in the art.

The above list of detailed descriptions is only specific to practical embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the spirit of the present invention should be included in the scope of the present invention.

Claims (12)

1. The lower hinge assembly comprises a fixed hinge piece fixed on a box body and a movable hinge piece fixed on a door body and movably connected with the fixed hinge piece, wherein a first base surface and a second base surface which are matched with each other are arranged between the fixed hinge piece and the movable hinge piece, a first shaft body, a first groove body matched with the first shaft body, a second shaft body and a second groove body matched with the second shaft body are arranged between the first base surface and the second base surface, and in the process that the movable hinge piece rotates and is opened in a direction away from the fixed hinge piece, the first shaft body is matched with the first groove body, and the second shaft body and the second groove body are matched with each other to drive the movable hinge piece to translate according to a preset track; the method is characterized in that: one of the first base surface and the second base surface is provided with a stop lug protruding towards the other base surface, and the other base surface is provided with a limit guide part which is positioned on the moving path of the stop lug and matched with the stop lug.

2. The lower hinge assembly of claim 1, wherein: the limiting guide part comprises a limiting groove matched with the stop lug, and after the movable hinge part rotates and opens in the direction away from the fixed hinge part until the stop lug is meshed into the limiting groove, the movable hinge part is limited at a preset opening angle.

3. The lower hinge assembly of claim 2, wherein: the preset opening angle is not smaller than 90 degrees.

4. The lower hinge assembly of claim 1, wherein: the limit guide part comprises a guide inclined plane, and the stop lug is matched with the guide inclined plane when the movable hinge part rotates from a preset closing angle to a fixed hinge part to be closed to a closing state.

5. The lower hinge assembly of claim 4, wherein: the stop lug is provided with a matching inclined plane, and when the movable hinge part rotates from a preset closing angle to a closing state towards the fixed hinge part, the matching inclined plane is matched with the guide inclined plane.

6. The lower hinge assembly of claim 4, wherein: the preset closing angle is 15 degrees.

7. The lower hinge assembly of any one of claims 1-6, wherein: the limiting guide part is arranged on the first base surface and is positioned at a position corresponding to the edge of the fixed hinge piece; or the limit guide part is arranged on the second basal plane, and the limit guide part is positioned at the position of the second basal plane corresponding to the edge of the movable hinge piece.

8. The lower hinge assembly of claim 7, wherein: and a wavy structure is arranged on the first base surface or the second base surface of the limit guide part in a protruding mode at a position corresponding to the moving path of the stop lug, and the wavy structure forms the limit guide part.

9. The lower hinge assembly of any one of claims 1-6, wherein: the limiting guide part is arranged at the notch of the first groove body or the second groove body.

10. The lower hinge assembly of claim 9, wherein: the notch of the first groove body and the notch of the second groove body are provided with flanging edges, and the limiting guide part is arranged on the flanging edges.

11. The lower hinge assembly of claim 1, wherein: the first shaft body and the second shaft body are convexly arranged on the fixed hinge piece, and the first groove body and the second groove body are arranged on the movable hinge piece.

12. An embedded refrigerator comprises a refrigerator body and a door body for opening or closing the refrigerator body; the method is characterized in that: the embedded refrigerator further comprising a lower hinge assembly as claimed in any one of claims 1 to 11 movably connecting the door to the refrigerator body.